Examples of porosity

• We shall assume that the porosity is the same in the two media.

• The arrangement of particles has given the samples high porosity, the pores are wide and fluids are therefore free to move, making the samples permeable.

• This large effective porosity allows the ingress of water within the grains, with potential damage to the grain upon freezing and thawing.

• The difference between scenarios (c) and (d) will be related to the porosity of the regolith.

• He saw no major difficulties in postulating peripheral porosities for the blood to circulate, although he could not visualize them for the time being.

• However, there are many factors that would affect the thermal conductivity, including the rock type, its mineral composition and porosity.

• It is clear from these results that porosity is not the sole criterion for rock colonization by micro-organisms.

• As well as the mineralogy of the sample, the textures (grain size, shape, porosity) were determined.

• It also looks at erosional processes, and very briefly at carbonate rock description and porosity.

• Compaction increased soil bulk density and penetration resistance and decreased porosity and per meability.

• The present day petrography of this formation shows a medium-grained and well-sorted quartzite with syntaxial quartz cements and virtually zero porosity.

• Secondary porosity development (alarmingly called decompaction!) is thought to result from carbonate solution by carbonic acid formed by decarboxylation during early stage hydrocarbon generation.

• The porosity values of the ceramics and soil were estimated to be 15% and 30%, respectively.

• Under low stresses, grain fracturing may be absent and deformation is accommodated also by grain rotation, grain sliding and porosity reduction.

• Along with a measure of humidity, this is related to the porosity of the medium.